Therapeutic lamp



Jan. 1, 1929.

1,697,450 F. A. ANDERSON THERAPEUTIC LAMP Filed May 21, 1927 Z-SheetS-Sheet 1 f 1% 2;" a agism J0 I M I Jan. 1, 1929;

2 Sheets-Sheet 2 F. A. ANDERSON THERAPEUTIC LAMP Filed May 21, 1927 Patented Jan. 1, 1929.

UNITED STATES rArsN'r OFFICE.

FRITZ A. ANnERsoN, on MILTON, wIscoNsIN, ASSIGNOR 1:0 THE BURDICK CORPORA- TION, or MILTON, wIsooNsIN, A CORPORATION or DELAWARE.

THERAPEUTIC LAMP.

Application filed May 21,

My invention relates to therapeutic lamps. More particularly it relates to a reflectorcasing and support for a mercury arc tube or' support to an exterior point on the casing where connection may be made to a service conductor cord.

Another object is to provide a reflectorcasin with a dependable support ,for a fragi e lamp tube to be mounted therein.

A further object is to provide, in a casing of the character described, means for minimizing the conductivity of heat from the lamp through the walls of the casing as when applicators are inserted in the front windows provided for such purpose.

Other objects and advantages will appear more fully from the following descriptlon' and from the accompanying drawings, in which similar reference characters indicate similar parts throughout the several views.

In the drawings: A v

Fig.1 is a front elev'ationof an embodiment of my invention;

Fig. 2 is a sectional view on the line 2-2 of Fig. 1; and V i Fig. 3 is a sectional view'onthe line 3-3 of Flg. 2.

My improved reflector-lamp-housing casing is shown mounted on a bracket 1 (see Fig. 2) which is constructed for attachment as at 2 to an arm 3 carried by a suitable support or stand. The bracket 1 carries thereupon a semi-cylindrical shell 4 which is secured thereto by bolts 5, The end walls of shell 4 are'crowned as shown at 6, so as to increase the rigidity of the shell and to present a pleasing outward appearance.

An aluminum reflector 7, conforming to the curvature of shell 4, is alsosecured to the bracket by bolts 5 and, adjacent the bracket is separated from shell 4 by washers 8 so that there is a slight air space between the adjacent walls of the reflector and outer shell. The purpose of this space is to Inimi- 1927. seam. 193,122.

mize'heat conduction from the lamp supportlng arm to the casing and adjacent portlons of the bracket.

The inner ends 'of the bolts 5 serve to secure a pair of spaced apart arms 9. These arms 9, WlllCll are formed vof tubular metal and polished, extendupwardly toward the rear of the casing for the major portion of their length and then forwardly so that the axes-of the sockets 10 formed at their outer tightly fitted into its socket 10 and each ferrule has an axial hole therethrough for the reception of a bolt 12. One bolt 12 carries a yoke 13 for holding one end of a mercury Vapor quartz lamp-tube or burner 14'wh-i1e the other bolt carrles a pronged sprin clam 15 for embracing and holding the ot er en of burner 14. The prongs of clamp 15 may be tightened about the burner b an adjusting screw 16. Thus the burner supported by the arms 9 on an axis substantially common to the axis of the'casing. I

The two. flexible conductors 17 and 18, I with whichthe two electrodes of the burners are ordinarily equipped, are. clamped under the nut of bolt 10 carrying yoke 13 and under the nut of adjusting screw 16, respectively, when the burner has been positioned. The inner ends of bolts 10 are connected to conductors 19. I

' Each conductor 19 extends down. through one of; the hollow arms 9 and passes through appropriate holes in reflectors? .and shell 4 into a channel 20 in the base of bracket 1.

The two conductors then pass together through a hole 21 in bracket 1 and are I is rotatably: mounted within casing 4 on trunnions 27 and 28 carried by casing. The hood is slightly smaller than the casing so as to betelescopable therein. The outer end of trunnion 28 carries a knob 29 by which it may be easily rotated to rotate the hood. It also has an external screw thread 30. A

threaded collar 31 is mounted upon the 1 6.5 ends lie in a plane parallel to the axis of the casing. Each arm 9'has a ferrule 11 of fiber threaded portion of trunnion 28 and has a wing 32 extending radially therefrom to facilitate its'being rotated. By turning the collar in one direction the threads thereon and on trunnion 28 force the end walls of the hood andshell together and thus lock thehood in any desired adjusted position.

By turning the collar in the reverse direction the end walls of the hood and shell can a pair of windows, each of which is equipped with an adapter attaching ring or flange 36 for the accommodation of suitable applicators, such for example as that set forth in my prior Patent No. 1,559,062, granted October 27, 1925. When applicators are not being used the windows may be closed by caps 37 which are provided with lenses of mica or other suitable material so that the burner may be observed without discomfort or injury to the operator.

The end walls 38 of hood 26 are crowned to conform to the curvature of the end wall 6 of easing 4:.

-In operation the device is supported as shown in Fig. 2, so that the open portion of the casing faces downwardly and to the front.

When the rays from the lamp are to be projected directly upon the patient, the easing is moved to the proper position so as to overlie the region where treatment is desired, and if necessary hood is lowered so as to confine the projection of rays upon the area to be treated.

During movement of the hood, as well as movement of the entire casing upon its support 3 no undue strain is placed upon the lamp mounting nor is shock imparted to the delicate mechanism of the lamp due to the particularly rigid construction of the arms 9 and their immediate and positive support upon bracket 1.

The reflectors 35 and 7 will function with maximum efiiciency, since the novel lamp mounting employed eliminates the necessity of any parts interposed between the lamp and the-rear upper wall of the casing. lThis is of utmost importance, since the entire efficiency of the lamp is thereby increased over the earlier and well known types of lamp casings and reflectors in which the lam is supported upon a crossmelnber exten ing from one end of the casing to the other.

The novel structure of the arms 9, which provide armored protection to the conduct- 1ng wires, practically eliminates the possibility of short circuits between the two conducting wires of opposite polarity, as is the case where the wires are unconcealed and likely to become worn, particularly after the insulating covering has dried from the heat and effect of the ultra-violet rays.

By providing a rigid connection between the bracket and shell and carryingthe conductors through the bracket and burner carrying arms the necessity for leading the wires in on the axis of the casing is eliminat ed and a less complicated and more sightly appliance results.

When the device is employed for the purpose of local treatment, hood 26 may be lowered to completely closed position so as to confine all of the light rays from the burner. One of the caps 37 is then removed and an applicator substituted therefor. These applicators are constructed to direct the rays to various portions of the anatomy where the application of the ultra-violet light and radiant energy is to be localized. When such applicators are used the patient is necessarily in close proximity with the casing. The novel structure of the hood, which includes the disposition of the reflector 35 spaced from the inner wall thereof, provides an air space which serves as an insulation against the conduction of heat therethrough. This feature eliminates unnecessary discomfort to the patient during local applications.

Having thus illustrated and described one embodiment of my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A lamp casing for therapeutic application of light comprising a substantially cylindrical member closed at its ends and consisting of two parts, one part rotatable with respect to the other about the axis of the cylinder, a pair of spaced apart lamp supporting arms extending transversely to and toward the axis of the cylinder, a rigid supporting bracket for mounting the easing-on a stand or the like, and means for securing the arms to the bracket, the stationary part of said. cylindrical member having a portion thereof interposed and fixed between the base of the arms. and said bracket.

2. A lamp casing for therapeutic application. of light comprising a substantially cylindrical member closed at its ends and consisting of two parts, one part rotatable with respect to the other about the axis thereof, a pair of spaced apart lamp supportin arms extending transversely to and towar the axis of the cylindrical member, a rigid supporting bracket for mounting the casing on a stand or the like, means for securely attachin the arms to the bracket, a reflector carrie by the stationary part of said cylinder and concentric therewith, said reflector having a portion thereof spaced apart from the cylindrical member, said spaced portions of said reflector and said cylindrical member being interposed and fixed between the base of said arms and said bracket for supporting the casing upon the bracket.

3. Allamp casing for therapeutic application of lightcomprising a substantially cylindrical member closed at its ends consisting of two parts, one part rotatable with respect. to the other, a pair of spaced apart rigid lamp supporting arms, said arms being hollow and adapted to receive electrical conducting wires therethrough and extending transversely to and toward the axis of the cylinder, a rigid bracket, means for securely fixing the arms to the bracket, the stationary part of said cylindrical member having a portion interposed and fixed between the base of the arms and said bracket, and an electrical connecting member secured to the bracket to receive the conducting wires therefrom.

4. A lamp casing for therapeutic application of light comprising a substantially cylindrical member closed at its ends consisting of two parts, one part rotatable with respect to the other, a pair of spaced apart rigid lamp-supportlng arms, said arms being hollow and adapted to receive electrical conducting wires therethrough, lamp supporting terminals carried at the outer end of said arms and extending radially toward the axis of the cylinder, a rigid bracket, means for securely fixing the arms to the bracket, the stationary part of said cylindrical member having a portion secured between the base of the arms and said bracket, and an electrical connecting member se-' cured to the bracket and for connection with the conducting wires.

5. A therapeutic lamp reflector-casing comprising a supporting bracket having a channel therein, a substantially semicylindrical reflector shell rigidly secured to the bracket, a pair of rigid, hollow arms at tached to the bracket and located within the shell and disposed transverse to the axis of the reflector shell, means on the arms for carrying a lamp burner, the arms and bracket channel providing a passage for conductors from the outside of the casing to the lamp burner, and a hood conforming to the curvature of the shell. and rotatably mounted on the axis thereof.

6. A therapeutic lamp reflector-casing comprising a substantially semicylindrical reflector shell, a supporting bracket immovably attached to the shell adjacent one exterior edge thereof, a hood conforming substantially to the curvature of the shell and mounted on the axis thereof so as to be telescopable therein, means for adjusting the position of the hood, and a lamp supporting arm located within the shell and disposed transverse tothe axis of the reflector shell, and rigidly secured to the bracket.

7. A therapeutic appliance comprising a cylindrical reflector housing for a therapeutic lamp, a pair of spaced apart rigid lamp supporting arms extending from .the inner walls of said housing transversely to and toward the axis of the housing whereby shadows of said arms on the inner wall of the reflector housing are reduced to a minimum, and a bracket secured to the outer wall of the housing adapted to be fixed to a supporting standard.

In witness whereof, I hereunto subscribe my name this 18 day of May, 1927.

FRITZ A. ANDERSON. 

